That card is from a DMC deck pack that was not compiled and added here.

There are unique non-set cards from the Nova block missing unless they were in the OCG Promos that were added.

Personally I didn't put them in this latest set I added cause the Nova block was a pretty obscure field so I wanted all the Nova unique promos compiled, so I was waiting for Ryoma to do them. But I guess it happened on the wikia in the mean time.

I'll see what I can do. As much as possible I want to avoid adding sets purely for unique cards but which come with cards we already have 5 copies of from all the different sets on the site.